“…For example in Hordeum vulgare, the common cultivated barley, different agricultural strains have been found to differ with respect to their karyotypes (Sharma andMukherji 1956, Sharma 1957). Similar is the case with several cultivated strains of Sorghum (Sharma and Bhattacharjee 1957), Triticum (Bhaduri and Ghosh 1954) as well as Secale (Bose 1956). These studies, mainly aided with improved methods, clearly suggest that structural changes of chromosomes are also associated with the evolution of agricultural strains of the same species.…”